assertion vs disclaimer

assertion

noun
  • A statement in a program asserting a condition expected to be true at a particular point, used in debugging. 

  • A statement or declaration which lacks support or evidence. 

  • The act of asserting; positive declaration or averment. 

  • Maintenance; vindication 

  • Something which is asserted; a declaration; a statement asserted. 

disclaimer

verb
  • To disclaim or disavow, as by appending a legal disclaimer. 

noun
  • A denial, disavowal, or renunciation, as of a title, claim, interest, estate, or trust; relinquishment or waiver of an interest or estate. 

  • A public disavowal, as of responsibility, pretensions, claims, opinions, etc. 

  • One who disclaims, disowns, or renounces. 

  • A disclosure of an interest, relationship, or the like. 

How often have the words assertion and disclaimer occurred in a corpus of books? (source: Google Ngram Viewer )